trading and gambling is same high risk high return
but iam play both them, in gambling iam prefered betting sport
in trading iam play pair bitcoin fiat money in huobi and btce
and pair bitcoin altcoin in poloniex bitrex c-cex cryptopia and yobit
I don't think they are the same as in all casino games you can't get over the house edge while in trading you can use your knowledge and skill to predict price changes. But sports betting also has room for decision making and skill so it's possible to be profitable from it over the long run.
i like you point of view regarding to sports betting as we all knew how skills and knowledge really attached from it in order for us to win like trading we also needed that skills and knowledge so we can easily predict what movements can the trade go and we can place our entry to trace and ern from it.